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답안 #207748

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
207748 2020-03-08T19:02:27 Z MohamedAhmed04 Collecting Stamps 3 (JOI20_ho_t3) C++14
100 / 100
 115 ms 135288 KB 
#include <bits/stdc++.h>
 
using namespace std ;
 
const int inf = 2e9 ;
const int MAX = 210 ;
 
long long X[MAX] , T[MAX] ;
int n ;
long long L ;
long long dp[MAX][MAX][MAX][2] ;
 
long long dist(int i , int j , int a , int b)
{
	if(b == 0)
	{
		if(a == 0)
			return (X[i] - X[i-1]) ;
		else
			return (L - X[j] + X[i-1]) ;
	}
	else
	{
		if(a == 1)
			return (X[j+1] - X[j]) ;
		else
			return (X[i] + L - X[j+1]) ;
	}
}
 
int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n>>L ;
	for(int i = 1 ; i <= n ; ++i)
		cin>>X[i] ;
	for(int i = 1 ; i <= n ; ++i)
		cin>>T[i] ;
	for(int i = 0 ; i <= n+1 ; ++i)
	{
		for(int j = 0 ; j <= n+1 ; ++j)
		{
			for(int taken = 1 ; taken <= n+1 ; ++taken)
			{
				for(int a = 0 ; a <= 1 ; ++a)
					dp[i][j][taken][a] = inf ;
			}
		}
	}
	X[n+1] = L ;
	int ans = 0 ;
	for(int i = 1 ; i <= n ; ++i)
	{
		for(int j = n ; j >= i ; --j)
		{
			for(int taken = 0 ; taken <= n ; ++taken)
			{
				for(int a = 0 ; a <= 1 ; ++a)
				{
					long long x , y ;
					x = dp[i-1][j][taken][0] + dist(i , j , a , 0) ;
					y = dp[i][j+1][taken][1] + dist(i , j , a , 1) ;
					dp[i][j][taken][a] = min(x , y) ;
					if(taken)
					{
						x = dp[i-1][j][taken-1][0] + dist(i , j , a , 0) ;
						y = dp[i][j+1][taken-1][1] + dist(i , j , a , 1) ;
						if((a == 0 && min(x , y) <= T[i]) || (a == 1 && min(x , y) <= T[j]))
						{
							dp[i][j][taken][a] = min(dp[i][j][taken][a] , min(x , y)) ;
							ans = max(ans , taken) ;
						}
					}
				}
			}
		}
	}
	return cout<<ans<<"\n" , 0 ;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 760 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 1016 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 888 KB Output is correct
9 Correct 5 ms 1016 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 6 ms 1016 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 760 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 1016 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 888 KB Output is correct
9 Correct 5 ms 1016 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 6 ms 1016 KB Output is correct
18 Correct 5 ms 1144 KB Output is correct
19 Correct 5 ms 888 KB Output is correct
20 Correct 5 ms 1016 KB Output is correct
21 Correct 5 ms 1144 KB Output is correct
22 Correct 5 ms 760 KB Output is correct
23 Correct 5 ms 1272 KB Output is correct
24 Correct 5 ms 1144 KB Output is correct
25 Correct 5 ms 1148 KB Output is correct
26 Correct 5 ms 1144 KB Output is correct
27 Correct 5 ms 760 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 5 ms 1272 KB Output is correct
30 Correct 5 ms 1400 KB Output is correct
31 Correct 5 ms 1144 KB Output is correct
32 Correct 5 ms 1144 KB Output is correct
33 Correct 5 ms 1272 KB Output is correct
34 Correct 5 ms 1272 KB Output is correct
35 Correct 5 ms 1272 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 760 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 1016 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 888 KB Output is correct
9 Correct 5 ms 1016 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 6 ms 1016 KB Output is correct
18 Correct 85 ms 108664 KB Output is correct
19 Correct 50 ms 66168 KB Output is correct
20 Correct 27 ms 35576 KB Output is correct
21 Correct 47 ms 62456 KB Output is correct
22 Correct 62 ms 80892 KB Output is correct
23 Correct 24 ms 30328 KB Output is correct
24 Correct 19 ms 23800 KB Output is correct
25 Correct 24 ms 29688 KB Output is correct
26 Correct 11 ms 11512 KB Output is correct
27 Correct 24 ms 30968 KB Output is correct
28 Correct 18 ms 22136 KB Output is correct
29 Correct 25 ms 31608 KB Output is correct
30 Correct 20 ms 24824 KB Output is correct
31 Correct 22 ms 29560 KB Output is correct
32 Correct 14 ms 15736 KB Output is correct
33 Correct 23 ms 29688 KB Output is correct
34 Correct 10 ms 10744 KB Output is correct
35 Correct 22 ms 29048 KB Output is correct
36 Correct 13 ms 13944 KB Output is correct
37 Correct 24 ms 30840 KB Output is correct
38 Correct 15 ms 17144 KB Output is correct
39 Correct 25 ms 32248 KB Output is correct
40 Correct 16 ms 19064 KB Output is correct
41 Correct 111 ms 133880 KB Output is correct
42 Correct 71 ms 90576 KB Output is correct
43 Correct 110 ms 134008 KB Output is correct
44 Correct 67 ms 89336 KB Output is correct
45 Correct 109 ms 133880 KB Output is correct
46 Correct 66 ms 90360 KB Output is correct

Subtask #4
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 760 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 1016 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 888 KB Output is correct
9 Correct 5 ms 1016 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 6 ms 1016 KB Output is correct
18 Correct 5 ms 1144 KB Output is correct
19 Correct 5 ms 888 KB Output is correct
20 Correct 5 ms 1016 KB Output is correct
21 Correct 5 ms 1144 KB Output is correct
22 Correct 5 ms 760 KB Output is correct
23 Correct 5 ms 1272 KB Output is correct
24 Correct 5 ms 1144 KB Output is correct
25 Correct 5 ms 1148 KB Output is correct
26 Correct 5 ms 1144 KB Output is correct
27 Correct 5 ms 760 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 5 ms 1272 KB Output is correct
30 Correct 5 ms 1400 KB Output is correct
31 Correct 5 ms 1144 KB Output is correct
32 Correct 5 ms 1144 KB Output is correct
33 Correct 5 ms 1272 KB Output is correct
34 Correct 5 ms 1272 KB Output is correct
35 Correct 5 ms 1272 KB Output is correct
36 Correct 85 ms 108664 KB Output is correct
37 Correct 50 ms 66168 KB Output is correct
38 Correct 27 ms 35576 KB Output is correct
39 Correct 47 ms 62456 KB Output is correct
40 Correct 62 ms 80892 KB Output is correct
41 Correct 24 ms 30328 KB Output is correct
42 Correct 19 ms 23800 KB Output is correct
43 Correct 24 ms 29688 KB Output is correct
44 Correct 11 ms 11512 KB Output is correct
45 Correct 24 ms 30968 KB Output is correct
46 Correct 18 ms 22136 KB Output is correct
47 Correct 25 ms 31608 KB Output is correct
48 Correct 20 ms 24824 KB Output is correct
49 Correct 22 ms 29560 KB Output is correct
50 Correct 14 ms 15736 KB Output is correct
51 Correct 23 ms 29688 KB Output is correct
52 Correct 10 ms 10744 KB Output is correct
53 Correct 22 ms 29048 KB Output is correct
54 Correct 13 ms 13944 KB Output is correct
55 Correct 24 ms 30840 KB Output is correct
56 Correct 15 ms 17144 KB Output is correct
57 Correct 25 ms 32248 KB Output is correct
58 Correct 16 ms 19064 KB Output is correct
59 Correct 111 ms 133880 KB Output is correct
60 Correct 71 ms 90576 KB Output is correct
61 Correct 110 ms 134008 KB Output is correct
62 Correct 67 ms 89336 KB Output is correct
63 Correct 109 ms 133880 KB Output is correct
64 Correct 66 ms 90360 KB Output is correct
65 Correct 102 ms 121208 KB Output is correct
66 Correct 87 ms 111116 KB Output is correct
67 Correct 86 ms 106360 KB Output is correct
68 Correct 77 ms 98168 KB Output is correct
69 Correct 96 ms 119672 KB Output is correct
70 Correct 95 ms 114936 KB Output is correct
71 Correct 89 ms 116088 KB Output is correct
72 Correct 93 ms 117244 KB Output is correct
73 Correct 84 ms 108664 KB Output is correct
74 Correct 83 ms 101624 KB Output is correct
75 Correct 93 ms 112376 KB Output is correct
76 Correct 103 ms 128632 KB Output is correct
77 Correct 101 ms 128632 KB Output is correct
78 Correct 77 ms 99448 KB Output is correct
79 Correct 81 ms 102776 KB Output is correct
80 Correct 102 ms 126160 KB Output is correct
81 Correct 79 ms 103928 KB Output is correct
82 Correct 85 ms 109944 KB Output is correct
83 Correct 107 ms 133880 KB Output is correct
84 Correct 90 ms 114808 KB Output is correct
85 Correct 101 ms 124920 KB Output is correct
86 Correct 95 ms 122228 KB Output is correct
87 Correct 92 ms 112376 KB Output is correct
88 Correct 113 ms 135288 KB Output is correct
89 Correct 114 ms 135288 KB Output is correct
90 Correct 89 ms 113656 KB Output is correct
91 Correct 112 ms 135288 KB Output is correct
92 Correct 115 ms 135288 KB Output is correct
93 Correct 104 ms 132676 KB Output is correct